JP3181249U - Construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction machine suitable for pile driving or excavation. To provide a construction machine that is compact and does not require wires as in the prior art.
A telescopic mechanism 1 that expands and contracts in the vertical direction, a motor M that is fixed to the upper portion of the telescopic mechanism 1 and that moves in the vertical direction as the telescopic mechanism 1 expands and contracts, and a rotational force of the motor M is applied to the pile 2 Or the transmission mechanism T which transmits to the excavation tools 3, and the self-propelled construction machine base 4 which mounts the expansion-contraction mechanism 1 are provided. The transmission mechanism T physically connects the pile 2 or the excavation tools 3 to the motor M so that the rotation axis of the pile 2 or the excavation tools 3 is in the vertical direction, and transmits the rotational force of the motor to the pile 2 or the excavation tools. 3 is transmitted. And it is comprised so that the pile 2 or the excavation tools 3 may be displaced to a perpendicular direction with the motor M by the expansion-contraction of the expansion-contraction mechanism 1. FIG.
[Selection] Figure 1

Description

  The present invention relates to a construction machine, and more particularly to a construction machine suitable for pile driving or excavation.

  Although the conventional pile driver was large and heavy, Patent Literature 1 is disclosed as a prior art that improves this and provides a compact pile driver.

  The pile driving machine disclosed in Patent Document 1 has a leader installed at a place where the pile is driven, and includes a motor that moves up and down along the leader. The pile is driven to rotate by this motor, and the suspension wire is wound up. Alternatively, the motor and the pile are moved up and down along the leader by sending out, and when the motor rises above a certain position, the leader is stretched upward by the rise of the motor, and conversely, when the motor is lowered, The leader shrinks as it descends.

  On such a structure, the pile driving machine disclosed in Patent Document 1 requires a motor and a wire for moving up and down the pile in addition to the leader.

JP 2000-355935 A

  The present invention provides a construction machine suitable for pile driving or excavation, and provides a construction machine that is compact and does not require wires as in the prior art.

  The construction machine according to the present invention includes a telescopic mechanism that expands and contracts in the vertical direction, and a motor that is fixed to the upper part of the telescopic mechanism and moves in the vertical direction as the telescopic mechanism expands and contracts. Moreover, the transmission mechanism which transmits the rotational force of this motor to a pile or excavation tools, and the self-propelled construction machine base which mounts an expansion-contraction mechanism are provided. The transmission mechanism physically connects the pile or the excavation tools to the motor so that the rotation axis of the pile or the excavation tools is in the vertical direction, and transmits the rotational force of the motor to the pile or the excavation tools. And it is comprised so that a pile or excavation tools may be displaced to a perpendicular direction with a motor by expansion-contraction of an expansion-contraction mechanism.

  According to the present invention, the motor is fixed to the upper part of the expansion / contraction mechanism, and the pile or the excavation tools are moved up and down together with the motor by the expansion / contraction of the expansion / contraction mechanism. A suitable construction machine can be provided.

It is a front view showing one embodiment of the present invention. It is a top view of embodiment shown in FIG. It is operation | movement explanatory drawing of embodiment shown in FIG. It is a block diagram which shows the 1st modification of a boom mechanism. It is a block diagram which shows the 1st modification of a boom mechanism. It is a block diagram which shows the 2nd modification of a boom mechanism. It is a block diagram which shows the 2nd modification of a boom mechanism. It is a block diagram which shows the 3rd modification of a boom mechanism.

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the construction machine according to the present embodiment includes a telescopic mechanism 1 that expands and contracts in the vertical direction in use, and a motor mechanism that is fixed to the upper part of the telescopic mechanism 1 and that moves in the vertical direction as the telescopic mechanism 1 expands and contracts. M. The motor mechanism M includes a transmission mechanism T that transmits the rotational force of the motor mechanism M to the pile 2 or the excavation tools 3, and a self-propelled construction machine base 4 that holds the telescopic mechanism 1. Among them, the transmission mechanism T physically connects the pile 2 or the excavation tools 3 to the motor mechanism M so that the rotation axis of the pile 2 or the excavation tools 3 is in the vertical direction, and the rotational force of the motor mechanism M Is transmitted to the pile 2 or the excavation tools 3. And it is comprised so that the pile 2 or the excavation tools 3 may be displaced to a perpendicular direction with the motor mechanism M by expansion-contraction of the expansion-contraction mechanism 1. FIG.

  In the present embodiment, a guide 5 that positions the rotation axis of the pile 2 or the excavation tools 3 so as to be parallel to the expansion / contraction direction of the expansion / contraction mechanism 1 is provided in the lower part of the expansion / contraction mechanism 1.

  Moreover, the construction machine of this embodiment is provided with the central arm 6 which mounts / lowers the expansion-contraction mechanism 1 with respect to the construction-machine base 4, and the said central arm 6 is fixed to the expansion-contraction mechanism 1 at one end part, and has the other end part. It is fixed to the construction machine base 4. Further, side arms 7 and 7 having one end fixed to the telescopic mechanism 1 and the other end fixed to the construction machine base 4 are provided on both sides of the central arm 6. By the central arm 6 and the side arms 7 and 7, the telescopic mechanism 1 is stably supported by three points. In the present embodiment, the central arm 6 and the side arms 7 and 7 constitute a boom mechanism that supports the telescopic mechanism 1 and loads it onto and from the construction machine base 4.

  Furthermore, in this embodiment, the transmission mechanism T is an attachment type, and the transmission mechanism T can be exchanged according to the pile 2 or the excavation tools 3 connected to the transmission mechanism T.

  For example, a swivel head to which a water swivel can be connected can be attached as the transmission mechanism T. A drilling tool 3 such as a boring rod is connected to the water swivel and the swivel head, and water is supplied to the drilling tool 3. While excavation work is also possible.

  In the present embodiment, the weight of the construction machine is set to 4 tons or less.

  More specifically, in the present embodiment, the telescopic mechanism 1 is a multistage boom whose telescopic expansion is driven by hydraulic pressure. Such a boom drive structure includes a boom that expands and contracts in response to the expansion and contraction of a hydraulic cylinder that is built in or mounted on the boom. There are some that link the expansion and contraction of multiple booms. In the present embodiment, the telescopic boom has a square cross section, and in the state where it is erected in the vertical direction, the diameter of the lower cylinder is larger and the diameter is smaller in the order of the middle and upper stages. A motor base 8 for fixing the motor mechanism M is fixed to the upper end portion of the telescopic mechanism 1. The motor base 8 extends in the horizontal direction from the upper end of the telescopic mechanism 1 when the longitudinal direction of the telescopic mechanism 1 is oriented in the vertical direction.

  A motor mechanism M is fixed to the surface of the motor base 8 facing the ground. The motor mechanism M includes a coupling mechanism such as a hydraulic motor or a high-torque electric motor and a chuck mechanism that detachably couples and fixes the transmission mechanism T. When the motor mechanism M and the transmission mechanism T are coupled by this coupling mechanism, the rotational force of the motor is transmitted to the gear mechanism in the transmission mechanism T.

  The transmission mechanism T includes a coupling mechanism such as a chuck mechanism for detachably coupling the pile (steel pipe pile) 2 or the excavating tools (boring rod) 3. When the transmission mechanism T and the pile 2 or the excavation tools 3 are coupled by this coupling mechanism, the rotation axis of the pile 2 or the excavation tools 3 is parallel to the expansion / contraction direction of the expansion / contraction mechanism 1 and the rotational force of the motor is transmitted. It is comprised so that it may be transmitted to the pile 2 or the excavation tools 3 via the gear mechanism in the mechanism T. The motor mechanism M or the transmission mechanism T may be equipped with a transmission. Alternatively, by employing a continuously variable transmission hydraulic motor or a high torque continuously variable transmission electric motor as a motor mounted on the motor mechanism M, it is possible to omit the provision of a separate transmission.

  The pile (steel pipe pile) 2 or the excavation tools (boring rod) 3 is selected according to the purpose of work, and is connected and fixed to the transmission mechanism T. Further, the transmission mechanism T is also an attachment to the motor mechanism M, and the transmission mechanism T corresponding to the purpose of the work is selected and connected and fixed to the motor mechanism M. For example, when excavation work is performed using the boring rod 3, excavation work while feeding water into the rod is possible by attaching the swivel head and the water swivel to the motor mechanism M as the transmission mechanism T as described above. Become.

  The guide 5 employs a structure in which the inner ring rotates with respect to the fixed outer ring via a bearing between the outer ring and the inner ring, such as a rolling bearing. The outer ring is fixed to the lower part of the lowermost cylinder of the telescopic mechanism 1, and the inner ring is inserted through the pile 2 or the excavation tools 3, and is rotatable with the rotation of the pile 2 or the excavation tools 3. At this time, when the pile 2 or the excavation tools 3 connected to the transmission mechanism T is inserted into the inner ring of the guide 5, the rotation axis of the pile 2 or the excavation tools 3 and the expansion / contraction direction of the expansion / contraction mechanism 1 become parallel. The dimensions of each part are set, and in the state where the expansion / contraction mechanism 1 is erected in the vertical direction, the rotation axis of the pile 2 or the excavation tools 3 coincides with the vertical direction. The guide 5 is preferably detachable from the telescopic mechanism 1 and can be exchanged according to the size and type of the pile 2 or the excavation tools 3 to be used. The guide 5 includes a hydraulic or manual chuck mechanism that detachably fixes the pile 2 or the excavation tools 3 to the guide 5.

  The telescopic mechanism 1 is connected to the construction machine base 4 by a central arm 6. The central arm 6 is an articulated arm and is driven by hydraulic pressure. One end portion of the central arm 6 is fixed to the upper part of the lowermost cylinder of the telescopic mechanism 1, and the other end portion is fixed to an end portion in the front-rear direction of the construction machine base 4. The telescopic mechanism 1 is retracted by removing the pile 2 or the excavating tools 3 and the central arm 6 is driven so that the telescopic mechanism 1 can be lifted from the ground and accommodated on the base of the construction machine base 4. On the contrary, when starting the work, the central arm 6 is driven, and the telescopic mechanism 1 is lowered from the construction machine base 4 to the ground and erected in the vertical direction.

  The side arms 7 and 7 are a telescopic damper or a telescopic cylinder for supporting the telescopic mechanism 1 at three points, and one end portion has a pivotal fulcrum on the upper side of the lowermost cylinder of the telescopic mechanism 1. The end portion is provided with a pivot point at the side end portion of the construction machine base 4.

  When the construction machine base 4 is viewed from above, the positional relationship between the central arm 6 and the side arms 7 and 7 is as shown in FIG. In the present embodiment, the central arm 6 is arranged at the center in the left-right direction of the construction machine base 4, but may be arranged close to the right or left.

  Hydraulic outriggers 11, 11, 13, and 13 are provided at four corners of the construction machine base 4 in the front and rear, right and left. The two outriggers 11, 11 on the side close to the expansion / contraction mechanism 1 can be arranged on the ground in a circumferential direction by a rotation fulcrum provided on the construction machine base 4. In addition, a soil discharge plate 13 is provided at the end of the construction machine base 4 opposite to the telescopic mechanism 1. During the work, in addition to the four outriggers, the earthing plate 13 is grounded to the ground, so that the construction machine base 4 can be stabilized with respect to the ground.

  An existing vehicle can be used for the construction machine base 4. For example, a hydraulic excavator, a power shovel, a backhoe, a mini excavator or the like called Yumbo (registered trademark) or mini-yumbo can be modified and manufactured. These types can use various types of base vehicles such as standard type, small rear turning type, ultra small turning type, and turning type. The self-propelled means may be a tire type or a crawler type.

  In the above configuration, when the pile 2 or the excavation tools 3 enter the ground, the pile 2 or the excavation tools 3 is attached in a state where the extension mechanism 1 is extended as shown in FIG. While applying a rotational force to the tool 3, the telescopic mechanism 1 is driven to contract. As the telescopic mechanism 1 contracts, the pile 2 or the excavating tools 3 enters the ground. As shown in FIG. 3, when the expansion / contraction mechanism 1 is sufficiently contracted, the pile 2 or the excavation tools 3 is removed, and the expansion / contraction mechanism 1 is fully extended again as shown in FIG. Then, if necessary, the next pile 2 or the excavation tools 3 is added and connected to the transmission mechanism T. Then, the telescopic mechanism 1 is contracted again while applying a rotational force to the pile 2 or the excavation tools 3. By repeating this operation, the pile 2 or the excavation tools 3 having a predetermined length can be made to enter the ground. The length of the expansion / contraction mechanism 1 is preferably a length that can strike a 6-meter pile at a stroke. Here, the drive of each part by electricity or hydraulic pressure can be performed from a controller (not shown).

  The construction machine of this embodiment can be used as a pile driving machine or excavator, and is a press-fit type (hybrid type) steel pipe pile construction, well excavation, soil survey, mud drilling for detached or small-scale foundations. Is particularly suitable.

  Structurally, the motor is fixed to the upper part of the expansion / contraction mechanism 1, and the pile 2 or the excavation tools 3 are moved up and down together with the motor M by the expansion / contraction of the expansion / contraction mechanism 1, so that it is compact and does not require wires as in the prior art. Alternatively, a construction machine suitable for excavation can be provided. Since there is no fixed leader in the pile work, it is easy to enter the site, and the pile work can be done stably by expansion and contraction of the boom.

  Moreover, the weight of the construction machine of this embodiment is 4 tons or less, Preferably it is 1-3 tons. As a result, the truck can be loaded and transported on a truck of 4 tons or less, and can be transported to a narrow space. Drilling in narrow areas is also possible.

  Here, the scope of the present invention is not limited to the above-described embodiment, but is the scope of the invention described in the claims for utility model registration. For example, the weight of the construction machine of the present invention is not necessarily 4 tons or less, and can be manufactured as a large machine. Moreover, the construction machine of this invention does not necessarily need to be used for both pile driving and excavation, and may be dedicated to pile driving or excavation only. Moreover, in the said embodiment, although the expansion-contraction mechanism 1 is connected to the construction machine base 4 by the center arm 6, the expansion-contraction mast standing on the base of the construction machine may be used as the expansion-contraction mechanism 1.

  Various modifications can also be made to the structure of the boom mechanism that supports the telescopic mechanism 1 and puts it on the construction machine base 4. Hereinafter, modifications of the boom mechanism will be introduced.

  First, the boom mechanism can take the structure shown in FIGS. A rotation fulcrum a and a force point b are provided on the lowermost (outermost shell) cylinder of the telescopic mechanism 1. The rotation fulcrum a is provided below the force point b. The rotation fulcrum a is fixed above the end of the construction machine base 4 on the base. Further, one end of the hydraulic cylinder 14 is fixed to the force point b so as to be rotatable. The other end of the hydraulic cylinder 14 is fixed to the construction machine base 4 so as to be rotatable. The fixing position of the other end portion of the hydraulic cylinder 14 on the construction machine base 4 is arranged on the inner side of the rotation fulcrum a. Then, when the hydraulic cylinder 14 is driven to extend and contract, the force point b is displaced, and the expansion / contraction mechanism 1 rotates about the rotation fulcrum a in the direction corresponding to the expansion / contraction of the hydraulic cylinder 14 to expand and contract as shown in FIG. The mechanism 1 can be lowered from the construction machine base 4 and installed in the vertical direction, and the telescopic mechanism 1 can be accommodated on the construction machine base 4 as shown in FIG. Reference numeral 15 denotes a boom catch that receives and supports the telescopic mechanism 1 that is laid down on the construction machine base 4. According to this modification, the telescopic mechanism 1 installed in the vertical direction can be stably supported by the two points of the rotation fulcrum a and the force point b. Here, the telescopic mechanism 1 may include a winch 16. Pulleys 17 and 17 are provided at both ends of the motor base 8, and the object fixed to the wire can be raised or lowered in the vertical direction by driving the winch 16 by bridging the wire from the winch to the pulley. Further, by fixing the winch to a cylinder (outermost shell) below the uppermost cylinder of the expansion / contraction mechanism 1, the object fixed to the wire is raised or lowered in the vertical direction according to the expansion / contraction of the expansion / contraction mechanism 1. It is possible.

  Secondly, the boom mechanism can adopt the structure shown in FIGS. A rotation fulcrum a is provided on the lowermost (outermost shell) cylinder of the telescopic mechanism 1, and force points b1 and b2 are provided above and below the rotation fulcrum a, respectively. One end of the arm 18 is fixed to the rotation fulcrum a so as to be rotatable. The other end portion of the arm 18 is fixed to an end portion on the base of the construction machine base 4 so as to be rotatable. In addition, one end portions of the hydraulic cylinders 14 and 19 are fixed to the respective force points b1 and b2 so as to be rotatable. The other end of each hydraulic cylinder 14, 19 is fixed to an end on the construction machine base 4 (near the other end of the arm 18) so as to be rotatable. The fixing position of the other end portion of the first hydraulic cylinder 14 is arranged inside the other end portion of the arm 18. Further, the fixing position of the other end portion of the second hydraulic cylinder 19 is arranged outside the other end portion of the arm 18. Then, by driving the hydraulic cylinders 14 and 19 to expand and contract, the force points b1 and b2 are displaced, and the expansion and contraction mechanism 1 rotates in a predetermined direction around the rotation fulcrum a. As shown in FIG. Can be lowered from the construction machine base 4 and installed in the vertical direction, and the telescopic mechanism 1 can be accommodated on the construction machine base 4 as shown in FIG. According to this modification, the telescopic mechanism 1 installed in the vertical direction can be stably supported by the three pivot points a and the force points b1 and b2.

  Third, the boom mechanism can take the structure shown in FIG. In this modification, an existing hydraulic excavator is used as the construction machine base 4. The telescopic mechanism 1 is attached as an attachment to the tip of the arm 21 of the hydraulic excavator. The arm 21 is connected to the lowermost (outermost shell) cylinder of the telescopic mechanism 1. Depending on the operation of the arm 21, the telescopic mechanism 1 can be installed in the vertical direction on the ground, and can be pulled up from the ground. According to this modification, the construction machine of the present invention can be configured using the existing construction machine base 4, and the telescopic mechanism 1 can be stably supported by the sturdy arm of the hydraulic excavator.

DESCRIPTION OF SYMBOLS 1 Telescopic mechanism 2 Pile 3 Excavation tools 4 Construction machine base 5 Guide 6 Center arm 7 Side arm 8 Motor base 11, 12 Outrigger 13 Earthing board 14, 19 Hydraulic cylinder 15 Boom catch 16 Winch 17 Pulley 18, 21 Arm a Rotation Support points b, b1, b2 Force point M Motor mechanism T Transmission mechanism

Claims (11)

A telescopic mechanism that expands and contracts in the vertical direction, a motor that is fixed to the upper part of the telescopic mechanism and that moves in the vertical direction as the telescopic mechanism expands and contracts, and a transmission mechanism that transmits the rotational force of the motor to the pile or excavation tools, A self-propelled construction machine base with the telescopic mechanism,
The transmission mechanism physically connects the pile or the excavation tools to the motor so that the rotation axis of the pile or the excavation tools is in a vertical direction, and transmits the rotational force of the motor to the pile or the excavation tools. ,
A construction machine configured such that the pile or excavation tools are displaced in the vertical direction together with the motor by extension and contraction of the extension mechanism.   The construction machine according to claim 1, further comprising a guide for positioning a rotation axis of the pile or the excavating tools so as to be parallel to an expansion / contraction direction of the expansion / contraction mechanism at a lower portion of the expansion / contraction mechanism.   The central arm includes a central arm for mounting and unloading the telescopic mechanism with respect to the construction machine base. The central arm has one end fixed to the telescopic mechanism and the other end fixed to the construction machine base. 3. A side arm fixed to the telescopic mechanism and a side arm fixed to the construction machine base at the other end is provided on both sides of the central arm, and the telescopic mechanism is supported at least at three points. Construction machinery as described in.   The construction machine according to any one of claims 1 to 3, wherein the transmission mechanism can be replaced in accordance with the pile or excavation tools connected to the transmission mechanism as an attachment type.   The construction machine according to any one of claims 1 to 4, further comprising a swivel head to which a water swivel can be connected as the transmission mechanism, wherein water can be fed from the water swivel and the swivel head to the excavation tools.   The construction machine according to any one of claims 1 to 5, wherein the construction machine has a weight of 4 tons or less.   The construction machine according to any one of claims 1 to 6, wherein the construction machine is manufactured by remodeling an existing excavator such as a hydraulic excavator.   The construction machine base is provided with a boom mechanism for loading and unloading the extension mechanism on the construction machine base, and the boom mechanism biases the turning fulcrum for turning the extension mechanism and the turning of the extension mechanism. And a cylinder connected between the power point and the construction machine base is extended and retracted to displace the power point and rotate the expansion and contraction mechanism around the rotation fulcrum. The construction machine according to claim 1 or 2, wherein an expansion / contraction mechanism is loaded onto and lowered from the construction machine base.   The rotation fulcrum and the force point are provided in an outer shell of the expansion / contraction mechanism, and when the longitudinal direction of the expansion / contraction mechanism is oriented in the vertical direction, the rotation fulcrum is positioned below the force point. The construction machine according to 8.   The rotation point and the force point are provided on an outer shell of the expansion / contraction mechanism, and the force points are arranged at two positions above and below the rotation support point when the longitudinal direction of the expansion / contraction mechanism is oriented in the vertical direction. Construction machinery.   A boom mechanism that displaces the telescopic mechanism with respect to the construction machine base is provided in the construction machine base, and a hydraulic excavator is used as the construction machine base, whereby the boom mechanism uses the arm of the hydraulic excavator, and the telescopic mechanism is The construction machine according to claim 1, wherein the construction machine is an attachment that can be attached to and detached from a tip portion of the arm.

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